runtest is the test driver for DejaGnu. You can specify two
kinds of things on the
runtest command line: command line
options, and Tcl variables that are passed to the test scripts. The
options are listed alphabetically below.
runtest returns one of the following exit codes:
if all tests passed including expected failures and unsupported tests.
if any test failed, passed unexpectedly, or was unresolved.
if Expect encountered any error in the test scripts.